Flash arrester



Get. 21, 1930. J, B, WEAVER 1,778,376

- FLASH ARBESTER Filed Nov. 4, 1927 gmwntoc rammed @ce 21,1930' JosEPia-E. WEAVER, or TOLEDO, omo

, ELAsH nnEEsrEE Application led November 4, 1927. Serial No. 231,062.A

panying drawing wherein:

' arrester constructed in accordance with the- Flgurel is a top plan View of a flash invention, and Y Figure 2 is a'longit-udinal central sectional view. of the same. f i

Asy shownvin the drawing, the flash arrester consists of a body castingA 1 vand a `cap casting 2 provided with mating flangesv 3 and 4 which are secured together by screw bolts 5. The body casting is elongated and Ahas a threaded opening '6 forattachment to y ,provided at one end with an outwardly proa combustible gas'feed pipe froml a gas gfenerator, .the Vvend of the casting being formed with a nut 7 to facilitatethe placing of the device in the feed line..V An enlarged gas chamberv 8 is provided in the casting 1` and suspended within this chamber are a pair of lire arresting screens 9 and 10.

Screen 9 is formed with an annular flange 11 which seats upon the shoulder 12 of an annular recess 13-at the flanged end of the casting. lA rubber spacing gasket 14 fits' in the recess-13 and rests uponthe flange 11 ofy the screen 9. Screen 10 is nestedin the screen 9 and is likewise formed with va retaining flange 15 which engages over the upper surface of the spacing gasket. v

The cap casting 2 has a threaded opening 16 so that it can be attached to a burner pipe and it is likewise provided with a nut 17 to facilitate its attachment,` The flanged end of the cap 2 has a tapering recess 18 adapted in the assembly of the parts to form a continuation of the gaschamber Sandproject-V ing outwardly `from the rim of the. recess is an annular clamping rib 19 which is adapted e v to bear against the rubber gasket 14; Hence,

when the screw bolts 5 are tightened, the

flanges of the ire scr-eens are securely .clamped between the gasket and the confining parts of the body and cap castings. This arrangement not only provides for kthe convenient and efficient placingrof the. lire screens within the gas chamber but it also has j the advantage of enabling changes andrepairs to be made witha minimumof effort andtime. y f 4 When thelash arrester is incorporated in the feed'line of a gas generator and burner, the gas normally flows through the gas chamber 8 and, out through the cap casting'into a gas conveying pipe leading to the ame jets of the burner. In Ithe event the gas within the burnerpipe becomes ignited by any backk flash from the jets,fthe screens 9 and 10 will v arrest vthe flame and thereby prevent combustion of the inflammable gases within the feed v line-back of the arrester. w v

VHaving thus described the invention, what I claim is: p y

Aflash arrester comprising a body casting jecting flange, there being an annularrecess formed at'the inner edge of the flanged end of the casting, a cup-shaped screen Apositioned ywithin the body Vcasting and having its edge portion flanged outwardly and seated on a shoulder formed by said recess, va gasket seat-v l ed in said recess and having one edge bearing against the flanged edge ofthe screena f vsecond cup-shapedscreenfnested within the vided with a flange mating the flange of the body casting, an annular clamping rib projectingfrom the cap casting into said recess and serving to clamp the flanged edges of the screens against said gasket, and means for 'securing the flanges of the two castings together.

In testimony whereof I hereunto aliiiz my JOSEPH B. WEAVER,

si gnature. 

